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Articles 53461 - 53490 of 53612

Full-Text Articles in Life Sciences

What Science Contributes To Agriculture, W. G. Wiegand Jan 1937

What Science Contributes To Agriculture, W. G. Wiegand

Journal of the Minnesota Academy of Science

No abstract provided.

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The Frank Carney Collection Of Maps, Edwin J. Foscue Nov 1936

The Frank Carney Collection Of Maps, Edwin J. Foscue

Field and Laboratory

The Department of Geology and Geography of Southern Methodist University has been fortunate in securing the entire collection of wall maps from the private library of the late Doctor Frank Carney, sometime Professor of Geology and Geography at Baylor University, Waco, Texas, and formerly of Denison University, Granville, Ohio.

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Practical Methods In Phase Rule Study: Transition Temperatures From Electromotive Force Measurements, V. Metler Nov 1936

Practical Methods In Phase Rule Study: Transition Temperatures From Electromotive Force Measurements, V. Metler

Field and Laboratory

The methods available for the determination of transition temperatures have been classed by Findlay under seven heads: (1) dilatometric methods, (2) vapor pressure methods, (3) solubility measurement methods, (4) latent heat measurement methods, (5) optical methods, (6) viscosimetric methods, and (7) electrical methods.

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Chemistry At The Texas Centennial Exposition, E. O. Heuse Nov 1936

Chemistry At The Texas Centennial Exposition, E. O. Heuse

Field and Laboratory

Although the Texas Centennial Exposition does not have an entire building devoted exclusively to science, there are many scientific exhibits and several of special importance to any one interested in chemistry. Such exhibits may be found in the Transportation Building, the Varied Industries Building and the Ford Building.

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Meteorite Craters And Their Possible Relationship To "Cryptovolcanic Structures", John D. Boon, Claude C. Albritton Jr. Nov 1936

Meteorite Craters And Their Possible Relationship To "Cryptovolcanic Structures", John D. Boon, Claude C. Albritton Jr.

Field and Laboratory

The increasing number of recognized meteorite craters indicates that these features are not so rare as formerly believed. It is probable, moreover, that meteorite craters of the geologic past were larger and more abundant than the relatively recent examples. Evidence for the fall of ancient meteorites must be sought, however, in geologic structures produced by impacts.

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Shell Repair In Polygyra Texasiana, Elmer P. Cheatum Nov 1936

Shell Repair In Polygyra Texasiana, Elmer P. Cheatum

Field and Laboratory

It has long been known, on the basis of field observations and laboratory experiments, that snails and clams are able to repair breaks in their shells. However, with the exception of Andrews' ('34, '35) excellent work on shell-repair of West Indian gastropoda, and Daniel's ('12) studies, practically all observations have been made upon European mollusks.

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A Gastropod New To The United States, Elmer P. Cheatum Nov 1936

A Gastropod New To The United States, Elmer P. Cheatum

Field and Laboratory

A species of branchiate snail new to the molluscan fauna of the United States, Hydrobia palomasensis (Pils.) (fide Pilsbry), was collected near Fort Davis, Texas, in April, 1936, by Mr. Ottys Sanders of Dallas. The specimens were found in a small canyon opening into Limpia Canyon, about five miles north of Fort Davis. The present writer, on a trip to this same locality last September, found this species in abundance.

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The Influence Of The Shoreline, Rivers And Springs On The Settlement And Early Development Of Texas, Ellis W. Shuler Nov 1936

The Influence Of The Shoreline, Rivers And Springs On The Settlement And Early Development Of Texas, Ellis W. Shuler

Field and Laboratory

A comparison of early colonial settlements in New England and Texas during the middle of the eighteenth century shows a decided contrast in their locations. In New England the colonists settled along the coast, in Texas along a line roughly parallel to the coast but about one hundred miles into the interior. This distribution, coast line and interior, is all the more striking since in Florida and the West Indies the Spanish colonists, just as the English in New England, settled along the sea margin.

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Front Matter Apr 1936

Front Matter

Journal of the Minnesota Academy of Science

The 4th Annual Meeting of The Minnesota Academy of Science.

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The Shelterbelt Project, J. M. Aikman Apr 1936

The Shelterbelt Project, J. M. Aikman

Journal of the Minnesota Academy of Science

No abstract provided.

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Utilization Of Some Farm Wastes, Chas A. Mann Apr 1936

Utilization Of Some Farm Wastes, Chas A. Mann

Journal of the Minnesota Academy of Science

No abstract provided.

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Science And Rubber Trees, E. C. Stakman Apr 1936

Science And Rubber Trees, E. C. Stakman

Journal of the Minnesota Academy of Science

No abstract provided.

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The Impact Of Meteors, John D. Boon Apr 1936

The Impact Of Meteors, John D. Boon

Field and Laboratory

Energy changes that occur when a meteor strikes the surface of the earth or the moon, are difficult to determine. The velocity of meteors is so much greater than that of molar masses with which we are familiar, such as projectiles of high powered rifles, that there is little basis for comparison.

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Transportation Adjustments To Topography In Dallas, Texas, Edwin J. Foscue Apr 1936

Transportation Adjustments To Topography In Dallas, Texas, Edwin J. Foscue

Field and Laboratory

The outstanding physiographic feature of Dallas County is the White Rock Cuesta, which marks the western edge of the Austin Chalk limestone. Immediately below the chalk lies the easily eroded Eagle Ford Shale, hence the contact between the two strata is clearly marked by this westward facing cuesta, which extends from the southwest corner of the county to the middle northern border. The Trinity River, an antecedent stream, has cut a gap through the cuesta about midway between the northern and southern boundaries of the county…. The gap through the cuesta, and the narrowing of the Trinity River flood plain, …

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Ichthyc Oil, John A. Riddick Apr 1936

Ichthyc Oil, John A. Riddick

Field and Laboratory

In the vicinity of Seefeld, in the Austrian Tyrol at an altitude of 1,000 meters lies a rock formation known geologically as Seefeld shale. It is found in veins varying in thick ness from 20 cm. to 100 cm. Enveloping this shale is the Gall enstein formation containing many fossil gastropods. The occurrence of this particular mollusk in large quantities dates the formation as Silurian. The Seefeld formation is a specific bituminous shale which yields a crude oil from which Ichtyhol is made. Centuries ago, the Tyrolian peasants would collect this shale, boil it with water in large pots, and …

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A Century Of Scientific Exploration In Texas Part 1: 1820-1880, S. W. Geiser Apr 1936

A Century Of Scientific Exploration In Texas Part 1: 1820-1880, S. W. Geiser

Field and Laboratory

Science evolves and is perfected by the patient and criti cal labors of generations of investigators; and scientific progress is marked by an unending series of publications. To this fact, indeed, is due the perennial interest of the History of Science…. Texas has an almost unique place in the history of scientific exploration. This is probably owing to a number of singular coincidences.

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The Araneida Of Dallas County: Preliminary Note, Sarah E. Jones Apr 1936

The Araneida Of Dallas County: Preliminary Note, Sarah E. Jones

Field and Laboratory

Little is known of the. Araneida of the Southwest. The Peckhams (1909) made an excellent report on the jumping spiders of Austin, Te:x:as, and vicinity. The report on "Oklahoma Spiders" by Banks, Newport, and Bird (1932) is also helpful. This is particularly true for the northern part of Texas, for many of our species are listed in that report. Other miscellaneous publications, such as those on new species by W. J. Gertsch (1932-33) have added to our knowledge of the spider-fauna of this section. The present report is an abstract of a preliminary survey of Dallas County Araneida. The work …

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Alumni Notes Apr 1936

Alumni Notes

Field and Laboratory

No abstract provided.

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Rhythm In Blossoming, C. O. Rosendahl, A. O. Dahl Apr 1936

Rhythm In Blossoming, C. O. Rosendahl, A. O. Dahl

Journal of the Minnesota Academy of Science

No abstract provided.

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Back Matter Apr 1936

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.

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In Praise Of Parasitism, E. M. Freeman Jan 1936

In Praise Of Parasitism, E. M. Freeman

Journal of the Minnesota Academy of Science

No abstract provided.

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Nutritional Studies Of Protozoa, Alfred M. Elliott Jan 1936

Nutritional Studies Of Protozoa, Alfred M. Elliott

Journal of the Minnesota Academy of Science

No abstract provided.

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Breeding Better Flax Varieties For Minnesota, A. C. Arny Jan 1936

Breeding Better Flax Varieties For Minnesota, A. C. Arny

Journal of the Minnesota Academy of Science

No abstract provided.

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Will Pine Or Aspen Dominate Minnesota Forests?, Hardy L. Shirley Jan 1936

Will Pine Or Aspen Dominate Minnesota Forests?, Hardy L. Shirley

Journal of the Minnesota Academy of Science

No abstract provided.

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A Comparative Study Of The Origin And The Cytological Development Of Some Legume Nodules, Fred W. Bieberdorf Jan 1936

A Comparative Study Of The Origin And The Cytological Development Of Some Legume Nodules, Fred W. Bieberdorf

Journal of the Minnesota Academy of Science

No abstract provided.

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Observations And Experiments On Diseases Of Plants In Hyderabad State, India, Syed Vaheeduddin Jan 1936

Observations And Experiments On Diseases Of Plants In Hyderabad State, India, Syed Vaheeduddin

Journal of the Minnesota Academy of Science

No abstract provided.

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Drought Resistance Of Green Ash As Affected By Geographic Origin, L. J. Meuli Jan 1936

Drought Resistance Of Green Ash As Affected By Geographic Origin, L. J. Meuli

Journal of the Minnesota Academy of Science

No abstract provided.

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Abstract Papers Jan 1936

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

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Back Matter Jan 1936

Back Matter

Journal of the Minnesota Academy of Science

No abstract provided.

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Front Matter Jan 1936

Front Matter

Journal of the Minnesota Academy of Science

Proceedings of The Minnesota Academy of Science. Volume 4. 1936.

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